PLUMES

A feather of a bird, especially a large or showy one used as a decoration.

A cluster of feathers worn as an ornament, especially on a helmet; a hackle.

A token of honour or prowess; that on which one prides oneself; a prize or reward.

To adorn, cover, or furnish with feathers or plumes, or as if with feathers or plumes.

Chiefly of a bird: to arrange and preen the feathers of, specifically in preparation for flight; hence , to prepare for (something).

(by extension) To congratulate (oneself) proudly, especially concerning something unimportant or when taking credit for another person's effort; to self-congratulate.

"He plumes himself on his skill."